EP0269719B1 - Permanent magnetischer doppelgenerator - Google Patents

Permanent magnetischer doppelgenerator Download PDF

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Publication number
EP0269719B1
EP0269719B1 EP87904170A EP87904170A EP0269719B1 EP 0269719 B1 EP0269719 B1 EP 0269719B1 EP 87904170 A EP87904170 A EP 87904170A EP 87904170 A EP87904170 A EP 87904170A EP 0269719 B1 EP0269719 B1 EP 0269719B1
Authority
EP
European Patent Office
Prior art keywords
rotor
permanent magnet
rotors
generator
shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP87904170A
Other languages
English (en)
French (fr)
Other versions
EP0269719A4 (de
EP0269719A1 (de
Inventor
Kenneth B. Sugden
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sundstrand Corp
Original Assignee
Sundstrand Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sundstrand Corp filed Critical Sundstrand Corp
Publication of EP0269719A1 publication Critical patent/EP0269719A1/de
Publication of EP0269719A4 publication Critical patent/EP0269719A4/de
Application granted granted Critical
Publication of EP0269719B1 publication Critical patent/EP0269719B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/02—Details
    • H02K21/021—Means for mechanical adjustment of the excitation flux
    • H02K21/022—Means for mechanical adjustment of the excitation flux by modifying the relative position between field and armature, e.g. between rotor and stator
    • H02K21/023—Means for mechanical adjustment of the excitation flux by modifying the relative position between field and armature, e.g. between rotor and stator by varying the amount of superposition, i.e. the overlap, of field and armature
    • H02K21/024—Radial air gap machines
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K16/00—Machines with more than one rotor or stator
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
    • H02K7/1807—Rotary generators

Definitions

  • This invention relates to a permanent magnet generator, and more specifically, to a permanent magnet generator having two, relatively movable, permanent magnet rotor assemblies in side by side relation.
  • Permanent magnet generators of the type having a rotor made up of two relatively movable permanent magnet rotor bodies have been proposed generally to provide for voltage regulation in response to changes in loading on the generator. They have also been employed for regulating voltage to compensate for changes in the rate of rotor rotation.
  • the output voltage of the generator may be varied as described more fully in such patents to achieve voltage regulation.
  • DE-C-402948 discloses a dual stator generator in which the stators are arranged side by side and in which rotors rotating within the stators are driven by a common drive.
  • the stators incorporate permanent magnets. Angular adjustment of the relative position of the rotors is possible while the machine is stopped by unclamping at least one of the rotors from its drive shaft and securing it in a new angular position relative to the other.
  • DE-C-402948 does not address the problem of voltage regulation of a rotating high speed generator.
  • US-A-2782328 discloses a dual permanent magnet generator in which the permanent magnets are on the rotors as opposed to the stators but in which there is no provision for variation of the relative angular positions of the rotors, wheter stationary or moving, to achieve voltage regulation.
  • the invention provides a generator comprising stator means including first and second side by side armatures; first and second permanent magnet rotors journalled for rotation within respective ones of the first and second armatures; a common drive for the rotors; and control means for angularly shifting the first rotor relative to the common drive; characterised in that the rotors are arranged side by side having mutually spaced axes of rotation, and the first rotor is of considerably lesser mass than the second rotor, the second rotor being non-shiftable with respect to the common drive.
  • the constant speed drive unit 10 may be regarded as conventional and accordingly will be described only to the limited extent necessary to achieve a full understanding of the invention.
  • the constant speed drive unit 10 includes a differential, generally designated 14, having a carrier 16. coupled to the input shaft 12 by an electrically or mechanically operated disconnect, generally designated 18.
  • an electrically or mechanically operated disconnect generally designated 18.
  • a thermal disconnect of known construction could be used in lieu of that specifically illustrated.
  • the differential 14 includes first and second meshed gears 20 and 22 which are meshed at their center portions 20a and 22a.
  • the gear 20 includes reduced diameter teeth 24 adjacent its left end whereas the gear 22 includes enlarged diameter teeth 26 adjacent its right hand end, both as viewed in Fig. 1b.
  • the gears 20 and 22 are journalled for rotation about their respective axes as well as for revolution about the axis defined by the input shaft 12 by the carrier 16 on their left hand side and a complementary carrier 28 on their right hand side as viewed in Fig. 1b.
  • the differential further includes first and second ring gears 30 and 32.
  • the ring gear 30 is meshed with the reduced diameter gear 24 on the gear 20 while the ring gear 32 is meshed with the enlarged diameter gear 26 on the gear 22.
  • the ring gear 30 is provided with external teeth as at 34 to serve as an output ring gear for purposes to be seen.
  • the complementary carrier 28 is coupled by any suitable means to a shaft 40 which drives a variable displacement hydraulic unit, generally designated 42, of conventional construction and of the general type illustrated in commonly owned United States Patent 3,576,143 issued April 27, 1971 to Baits.
  • a conventional fixed displacement hydraulic unit, generally designated 44 when acting as a hydraulic motor, receives hydraulic fluid from the variable displacement hydraulic unit 42 which is coaxial with the unit 44.
  • the fixed hydraulic unit 44 likewise is of the type described in the previously identified United States Letters Patent to Baits.
  • a shaft 46 concentric about the shaft 40 is connected to the fixed hydraulic unit 44 and in turn is splined as at 48 to the ring gear 32.
  • the gear 58 may mount a permanent magnet rotor body 62 rotatable withing a stator armature 64 mounted on the housing 66 of the system.
  • the permanent magnet generator just defined is utilized to provide power to a conventional generator control unit (not shown).
  • Splines 68 also connect the gear 58 to a shaft 70 on the axis 61 of rotation of the gear 58.
  • the shaft 70 extends through a permanent magnet rotor body 72 journalled by a bearing 74 and is splined as at 76 to the shaft 78 of a control unit, generally designated 80.
  • the control unit 80 is of the type disclosed in our European Patent Application No. 87900759.9, claiming priority from US 813.498 which is entitled Self-Powered Hydraulic Rotary Actuator and filed December 26, 1985, the details of which are herein incorporated by reference.
  • the control unit 80 includes a rotatable housing 82 and a vane 84 is located within the housing 82 and is affixed to the shaft 78.
  • Fluid passages for receiving an input signal such as the one shown at 86 in Fig.1a are operable to provide fluid under pressure to one or the other of the sides of the vane 84 to thereby rotate the shaft 78 within the housing 82 and thereby change the angular relationship between the shaft 78 and the exterior of the housing 82.
  • the latter is splined as by splines 88 to the permanent magnet rotor body 72.
  • the rotor body 72 is rotatable within a stator 90 including an armature 92 and stator windings 94. Power induced in the windings 94 is utilized elsewhere as one of the main power outputs of the generator.
  • a shaft 96 is journalled as by bearings 98 for rotation about an axis 100 which is parallel to the axis of rotation 61 of the gear 58 as well as the axis of rotation of the input shaft 12.
  • the shaft 96 mounts a gear 102 which, in the preferred embodiment, is meshed with the external gear teeth 34 on the output ring gear 30 as can be appreciated from the relationship of the axis 100 (Fig.2) to the input shaft 12.
  • the gear 102 could be driven by the gear 58 via an idler if desired.
  • the shaft 96 mounts a permanent magnet rotor body 104 which is disposed within a stator 106 having an armature 108 and windings 110. Frequently, the windings 110 will be connected in series with the windings 94 for voltage regulatin purposes.
  • this construction provides for rotation of the rotor body 104 within the stator 106 when the shaft 96 is driven. It will also be appreciated that the rotor body 104 is firmly affixed to the shaft 96 and thus its angular position with respect thereto cannot be changed.
  • the rotor body 72 is a relatively low mass component, even when the generator is operating at high speeds as is typical of aircraft generators which frequently operate at 12,000 rpm or even 24,000 rpm, the loading on the rotor body 72 due to operational forces is much lower than that on other system components because of the lower mass. As a consequence, it is much easier to effect precision adjustment of the angular position of the rotor body 72 with respect to other system components, including specifically, the rotor body 104. Thus, precision voltage regulation can be achieved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Claims (2)

1. Ein Generator mit
   einem Polgehäuse (90, 106), in dem der erste und zweite Anker (92, 108) nebeneinander angeordnet sind;
   dem ersten und zweiten Permanentmagnetläufer (72, 104), die bezüglich des ersten und zweiten Ankers drehbar gelagert sind;
   einem gemeinsamen Antrieb (10) für die Läufer und Steuerungen (80) zum geschwindigkeitsabhängigen Verstellen des ersten Läufers hinsichtlich des gemeinsamen Antriebs.
   In diesem Aufbau sind die Läufer nebeneinander angeordnet und weisen mit Zwischenraum angeordnete Drehachsen auf. Der erste Läufer (72) hat eine weitaus geringere Masse als der zweite Läufer (104). Der zweite Läufer (104) ist bezüglich des gemeinsamen Antriebs nicht verstellbar.
2. Ein Generator wie unter 1. beschrieben, mit der Besonderheit, daß der gemeinsame Antrieb (10) ein Drehelement besitzt (30), das mit dem zweiten Läufer (104) fest verbunden ist und diesen antreibt, und das außerdem über die Steuerungen (80) mit dem ersten Läufer (72) fest verbunden ist und diesen ebenfalls antreibt.
EP87904170A 1986-06-16 1987-06-05 Permanent magnetischer doppelgenerator Expired - Lifetime EP0269719B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/874,953 US4728841A (en) 1986-06-16 1986-06-16 Dual permanent magnet generator construction
US874953 1986-06-16

Publications (3)

Publication Number Publication Date
EP0269719A1 EP0269719A1 (de) 1988-06-08
EP0269719A4 EP0269719A4 (de) 1988-09-28
EP0269719B1 true EP0269719B1 (de) 1992-01-15

Family

ID=25364943

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87904170A Expired - Lifetime EP0269719B1 (de) 1986-06-16 1987-06-05 Permanent magnetischer doppelgenerator

Country Status (5)

Country Link
US (1) US4728841A (de)
EP (1) EP0269719B1 (de)
JP (1) JPS63503591A (de)
DE (1) DE3776097D1 (de)
WO (1) WO1987007785A1 (de)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4817461A (en) * 1987-10-05 1989-04-04 Sundstrand Corporation Dual generator phase shifting device
US5002521A (en) * 1988-12-07 1991-03-26 Sundstrand Corporation Dual load path motor means for aircraft actuation systems and the like
US4965477A (en) * 1989-03-17 1990-10-23 Sundstrand Corporation Integrated drive generator with permanent magnet generator on second shaft
US4990807A (en) * 1989-09-19 1991-02-05 Sundstrand Corporation Integrated drive generator having magnet generator on second shaft
US5300848A (en) * 1989-11-14 1994-04-05 Sunstrand Corporation Dual permanent magnet generator planetary gear actuator and rotor phase shifting method
US5245238A (en) * 1991-04-30 1993-09-14 Sundstrand Corporation Axial gap dual permanent magnet generator
US5260642A (en) * 1991-04-30 1993-11-09 Sundstrand Corporation Torque driven dual PMG actuator
US5955809A (en) * 1992-08-17 1999-09-21 Intellectual Property Law Department Sundstrand Corporation Permanent magnet generator with auxiliary winding
US5309081A (en) * 1992-08-18 1994-05-03 Sundstrand Corporation Power conversion system with dual permanent magnet generator having prime mover start capability
US6118186A (en) * 1994-09-14 2000-09-12 Coleman Powermate, Inc. Throttle control for small engines and other applications
US5625276A (en) * 1994-09-14 1997-04-29 Coleman Powermate, Inc. Controller for permanent magnet generator
US5900722A (en) * 1994-09-14 1999-05-04 Coleman Powermate, Inc. Multimode power converter
US5977648A (en) * 1996-10-21 1999-11-02 Sundstrand Corporation Hydraulically driven low reactance, large air gap permanent magnet generator and voltage regulation system for use therewith
FI109596B (fi) * 1997-01-23 2002-09-13 Kone Corp Hissin käyttökoneisto ja hissi
DE19907852A1 (de) * 1999-02-24 2000-08-31 Bayerische Motoren Werke Ag Generatorsystem
US6323576B1 (en) 1999-10-12 2001-11-27 Power Works, Inc. Electric power generator having rotor magnets and stator faces similarly shaped
US20060087123A1 (en) * 2004-10-22 2006-04-27 Stout David E Dual-rotor, single input/output starter-generator
US7495361B2 (en) * 2004-11-05 2009-02-24 Pratt & Whitney Canada Corp. Electric machine arrangement
US7642684B2 (en) * 2007-02-15 2010-01-05 Hamilton Sunstrand Corporation Nested variable field dynamoelectric machine
US7541705B2 (en) 2007-03-28 2009-06-02 General Electric Company Fault-tolerant permanent magnet machine with reconfigurable flux paths in stator back iron
US7605503B2 (en) 2007-03-28 2009-10-20 General Electric Company Fault-tolerant permanent magnet machine with reconfigurable stator core slot opening and back iron flux paths
US7605504B2 (en) 2007-03-28 2009-10-20 General Electric Company Fault-tolerant permanent magnet machine with reconfigurable stator core slot flux paths
US9447822B2 (en) 2012-03-16 2016-09-20 Hamilton Sundstrand Corporation Bug roller bearing outer race assembly
US9989138B2 (en) 2012-04-26 2018-06-05 Hamilton Sundstrand Corporation Integrated drive generator having a variable input speed and constant output frequency and method of driving
US11927102B2 (en) 2022-06-10 2024-03-12 Hamilton Sundstrand Corporation Main engine start using a dual permanent magnet generator system

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Also Published As

Publication number Publication date
DE3776097D1 (de) 1992-02-27
JPS63503591A (ja) 1988-12-22
EP0269719A4 (de) 1988-09-28
US4728841A (en) 1988-03-01
WO1987007785A1 (en) 1987-12-17
EP0269719A1 (de) 1988-06-08

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